2 * This handles recursive filename detection with exclude
3 * files, index knowledge etc..
5 * Copyright (C) Linus Torvalds, 2005-2006
6 * Junio Hamano, 2005-2006
12 struct path_simplify {
17 static int read_directory_recursive(struct dir_struct *dir, const char *path, int len,
18 int check_only, const struct path_simplify *simplify);
19 static int get_dtype(struct dirent *de, const char *path, int len);
21 /* helper string functions with support for the ignore_case flag */
22 int strcmp_icase(const char *a, const char *b)
24 return ignore_case ? strcasecmp(a, b) : strcmp(a, b);
27 int strncmp_icase(const char *a, const char *b, size_t count)
29 return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
32 int fnmatch_icase(const char *pattern, const char *string, int flags)
34 return fnmatch(pattern, string, flags | (ignore_case ? FNM_CASEFOLD : 0));
37 static size_t common_prefix_len(const char **pathspec)
39 const char *n, *first;
46 while ((n = *pathspec++)) {
48 for (i = 0; first == n || i < max; i++) {
50 if (!c || c != first[i] || is_glob_special(c))
55 if (first == n || len < max) {
65 * Returns a copy of the longest leading path common among all
68 char *common_prefix(const char **pathspec)
70 unsigned long len = common_prefix_len(pathspec);
72 return len ? xmemdupz(*pathspec, len) : NULL;
75 int fill_directory(struct dir_struct *dir, const char **pathspec)
80 * Calculate common prefix for the pathspec, and
81 * use that to optimize the directory walk
83 len = common_prefix_len(pathspec);
85 /* Read the directory and prune it */
86 read_directory(dir, pathspec ? *pathspec : "", len, pathspec);
90 int within_depth(const char *name, int namelen,
91 int depth, int max_depth)
93 const char *cp = name, *cpe = name + namelen;
99 if (depth > max_depth)
106 * Does 'match' match the given name?
107 * A match is found if
109 * (1) the 'match' string is leading directory of 'name', or
110 * (2) the 'match' string is a wildcard and matches 'name', or
111 * (3) the 'match' string is exactly the same as 'name'.
113 * and the return value tells which case it was.
115 * It returns 0 when there is no match.
117 static int match_one(const char *match, const char *name, int namelen)
121 /* If the match was just the prefix, we matched */
123 return MATCHED_RECURSIVELY;
127 unsigned char c1 = tolower(*match);
128 unsigned char c2 = tolower(*name);
129 if (c1 == '\0' || is_glob_special(c1))
139 unsigned char c1 = *match;
140 unsigned char c2 = *name;
141 if (c1 == '\0' || is_glob_special(c1))
153 * If we don't match the matchstring exactly,
154 * we need to match by fnmatch
156 matchlen = strlen(match);
157 if (strncmp_icase(match, name, matchlen))
158 return !fnmatch_icase(match, name, 0) ? MATCHED_FNMATCH : 0;
160 if (namelen == matchlen)
161 return MATCHED_EXACTLY;
162 if (match[matchlen-1] == '/' || name[matchlen] == '/')
163 return MATCHED_RECURSIVELY;
168 * Given a name and a list of pathspecs, see if the name matches
169 * any of the pathspecs. The caller is also interested in seeing
170 * all pathspec matches some names it calls this function with
171 * (otherwise the user could have mistyped the unmatched pathspec),
172 * and a mark is left in seen[] array for pathspec element that
173 * actually matched anything.
175 int match_pathspec(const char **pathspec, const char *name, int namelen,
176 int prefix, char *seen)
186 for (i = 0; pathspec[i] != NULL; i++) {
188 const char *match = pathspec[i] + prefix;
189 if (seen && seen[i] == MATCHED_EXACTLY)
191 how = match_one(match, name, namelen);
195 if (seen && seen[i] < how)
203 * Does 'match' match the given name?
204 * A match is found if
206 * (1) the 'match' string is leading directory of 'name', or
207 * (2) the 'match' string is a wildcard and matches 'name', or
208 * (3) the 'match' string is exactly the same as 'name'.
210 * and the return value tells which case it was.
212 * It returns 0 when there is no match.
214 static int match_pathspec_item(const struct pathspec_item *item, int prefix,
215 const char *name, int namelen)
217 /* name/namelen has prefix cut off by caller */
218 const char *match = item->match + prefix;
219 int matchlen = item->len - prefix;
221 /* If the match was just the prefix, we matched */
223 return MATCHED_RECURSIVELY;
225 if (matchlen <= namelen && !strncmp(match, name, matchlen)) {
226 if (matchlen == namelen)
227 return MATCHED_EXACTLY;
229 if (match[matchlen-1] == '/' || name[matchlen] == '/')
230 return MATCHED_RECURSIVELY;
233 if (item->use_wildcard && !fnmatch(match, name, 0))
234 return MATCHED_FNMATCH;
240 * Given a name and a list of pathspecs, see if the name matches
241 * any of the pathspecs. The caller is also interested in seeing
242 * all pathspec matches some names it calls this function with
243 * (otherwise the user could have mistyped the unmatched pathspec),
244 * and a mark is left in seen[] array for pathspec element that
245 * actually matched anything.
247 int match_pathspec_depth(const struct pathspec *ps,
248 const char *name, int namelen,
249 int prefix, char *seen)
254 if (!ps->recursive || ps->max_depth == -1)
255 return MATCHED_RECURSIVELY;
257 if (within_depth(name, namelen, 0, ps->max_depth))
258 return MATCHED_EXACTLY;
266 for (i = ps->nr - 1; i >= 0; i--) {
268 if (seen && seen[i] == MATCHED_EXACTLY)
270 how = match_pathspec_item(ps->items+i, prefix, name, namelen);
271 if (ps->recursive && ps->max_depth != -1 &&
272 how && how != MATCHED_FNMATCH) {
273 int len = ps->items[i].len;
274 if (name[len] == '/')
276 if (within_depth(name+len, namelen-len, 0, ps->max_depth))
277 how = MATCHED_EXACTLY;
284 if (seen && seen[i] < how)
292 * Return the length of the "simple" part of a path match limiter.
294 static int simple_length(const char *match)
299 unsigned char c = *match++;
301 if (c == '\0' || is_glob_special(c))
306 static int no_wildcard(const char *string)
308 return string[simple_length(string)] == '\0';
311 void parse_exclude_pattern(const char **pattern,
316 const char *p = *pattern;
321 *flags |= EXC_FLAG_NEGATIVE;
325 if (len && p[len - 1] == '/') {
327 *flags |= EXC_FLAG_MUSTBEDIR;
329 for (i = 0; i < len; i++) {
334 *flags |= EXC_FLAG_NODIR;
335 *nowildcardlen = simple_length(p);
337 * we should have excluded the trailing slash from 'p' too,
338 * but that's one more allocation. Instead just make sure
339 * nowildcardlen does not exceed real patternlen
341 if (*nowildcardlen > len)
342 *nowildcardlen = len;
343 if (*p == '*' && no_wildcard(p + 1))
344 *flags |= EXC_FLAG_ENDSWITH;
349 void add_exclude(const char *string, const char *base,
350 int baselen, struct exclude_list *which)
357 parse_exclude_pattern(&string, &patternlen, &flags, &nowildcardlen);
358 if (flags & EXC_FLAG_MUSTBEDIR) {
360 x = xmalloc(sizeof(*x) + patternlen + 1);
362 memcpy(s, string, patternlen);
363 s[patternlen] = '\0';
366 x = xmalloc(sizeof(*x));
369 x->patternlen = patternlen;
370 x->nowildcardlen = nowildcardlen;
372 x->baselen = baselen;
374 ALLOC_GROW(which->excludes, which->nr + 1, which->alloc);
375 which->excludes[which->nr++] = x;
378 static void *read_skip_worktree_file_from_index(const char *path, size_t *size)
382 enum object_type type;
384 struct index_state *istate = &the_index;
387 pos = index_name_pos(istate, path, len);
390 if (!ce_skip_worktree(istate->cache[pos]))
392 data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
393 if (!data || type != OBJ_BLOB) {
401 void free_excludes(struct exclude_list *el)
405 for (i = 0; i < el->nr; i++)
406 free(el->excludes[i]);
413 int add_excludes_from_file_to_list(const char *fname,
417 struct exclude_list *which,
425 fd = open(fname, O_RDONLY);
426 if (fd < 0 || fstat(fd, &st) < 0) {
430 (buf = read_skip_worktree_file_from_index(fname, &size)) == NULL)
436 if (buf[size-1] != '\n') {
437 buf = xrealloc(buf, size+1);
442 size = xsize_t(st.st_size);
447 buf = xmalloc(size+1);
448 if (read_in_full(fd, buf, size) != size) {
460 for (i = 0; i < size; i++) {
461 if (buf[i] == '\n') {
462 if (entry != buf + i && entry[0] != '#') {
463 buf[i - (i && buf[i-1] == '\r')] = 0;
464 add_exclude(entry, base, baselen, which);
472 void add_excludes_from_file(struct dir_struct *dir, const char *fname)
474 if (add_excludes_from_file_to_list(fname, "", 0, NULL,
475 &dir->exclude_list[EXC_FILE], 0) < 0)
476 die("cannot use %s as an exclude file", fname);
479 static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
481 struct exclude_list *el;
482 struct exclude_stack *stk = NULL;
485 if ((!dir->exclude_per_dir) ||
486 (baselen + strlen(dir->exclude_per_dir) >= PATH_MAX))
487 return; /* too long a path -- ignore */
489 /* Pop the ones that are not the prefix of the path being checked. */
490 el = &dir->exclude_list[EXC_DIRS];
491 while ((stk = dir->exclude_stack) != NULL) {
492 if (stk->baselen <= baselen &&
493 !strncmp(dir->basebuf, base, stk->baselen))
495 dir->exclude_stack = stk->prev;
496 while (stk->exclude_ix < el->nr)
497 free(el->excludes[--el->nr]);
502 /* Read from the parent directories and push them down. */
503 current = stk ? stk->baselen : -1;
504 while (current < baselen) {
505 struct exclude_stack *stk = xcalloc(1, sizeof(*stk));
513 cp = strchr(base + current + 1, '/');
515 die("oops in prep_exclude");
518 stk->prev = dir->exclude_stack;
519 stk->baselen = cp - base;
520 stk->exclude_ix = el->nr;
521 memcpy(dir->basebuf + current, base + current,
522 stk->baselen - current);
523 strcpy(dir->basebuf + stk->baselen, dir->exclude_per_dir);
524 add_excludes_from_file_to_list(dir->basebuf,
525 dir->basebuf, stk->baselen,
526 &stk->filebuf, el, 1);
527 dir->exclude_stack = stk;
528 current = stk->baselen;
530 dir->basebuf[baselen] = '\0';
533 int match_basename(const char *basename, int basenamelen,
534 const char *pattern, int prefix, int patternlen,
537 if (prefix == patternlen) {
538 if (!strcmp_icase(pattern, basename))
540 } else if (flags & EXC_FLAG_ENDSWITH) {
541 if (patternlen - 1 <= basenamelen &&
542 !strcmp_icase(pattern + 1,
543 basename + basenamelen - patternlen + 1))
546 if (fnmatch_icase(pattern, basename, 0) == 0)
552 int match_pathname(const char *pathname, int pathlen,
553 const char *base, int baselen,
554 const char *pattern, int prefix, int patternlen,
561 * match with FNM_PATHNAME; the pattern has base implicitly
564 if (*pattern == '/') {
570 * baselen does not count the trailing slash. base[] may or
571 * may not end with a trailing slash though.
573 if (pathlen < baselen + 1 ||
574 (baselen && pathname[baselen] != '/') ||
575 strncmp_icase(pathname, base, baselen))
578 namelen = baselen ? pathlen - baselen - 1 : pathlen;
579 name = pathname + pathlen - namelen;
583 * if the non-wildcard part is longer than the
584 * remaining pathname, surely it cannot match.
586 if (prefix > namelen)
589 if (strncmp_icase(pattern, name, prefix))
596 return fnmatch_icase(pattern, name, FNM_PATHNAME) == 0;
599 /* Scan the list and let the last match determine the fate.
600 * Return 1 for exclude, 0 for include and -1 for undecided.
602 int excluded_from_list(const char *pathname,
603 int pathlen, const char *basename, int *dtype,
604 struct exclude_list *el)
609 return -1; /* undefined */
611 for (i = el->nr - 1; 0 <= i; i--) {
612 struct exclude *x = el->excludes[i];
613 const char *exclude = x->pattern;
614 int to_exclude = x->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
615 int prefix = x->nowildcardlen;
617 if (x->flags & EXC_FLAG_MUSTBEDIR) {
618 if (*dtype == DT_UNKNOWN)
619 *dtype = get_dtype(NULL, pathname, pathlen);
620 if (*dtype != DT_DIR)
624 if (x->flags & EXC_FLAG_NODIR) {
625 if (match_basename(basename,
626 pathlen - (basename - pathname),
627 exclude, prefix, x->patternlen,
633 assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
634 if (match_pathname(pathname, pathlen,
635 x->base, x->baselen ? x->baselen - 1 : 0,
636 exclude, prefix, x->patternlen, x->flags))
639 return -1; /* undecided */
642 static int excluded(struct dir_struct *dir, const char *pathname, int *dtype_p)
644 int pathlen = strlen(pathname);
646 const char *basename = strrchr(pathname, '/');
647 basename = (basename) ? basename+1 : pathname;
649 prep_exclude(dir, pathname, basename-pathname);
650 for (st = EXC_CMDL; st <= EXC_FILE; st++) {
651 switch (excluded_from_list(pathname, pathlen, basename,
652 dtype_p, &dir->exclude_list[st])) {
662 void path_exclude_check_init(struct path_exclude_check *check,
663 struct dir_struct *dir)
666 strbuf_init(&check->path, 256);
669 void path_exclude_check_clear(struct path_exclude_check *check)
671 strbuf_release(&check->path);
675 * Is this name excluded? This is for a caller like show_files() that
676 * do not honor directory hierarchy and iterate through paths that are
677 * possibly in an ignored directory.
679 * A path to a directory known to be excluded is left in check->path to
680 * optimize for repeated checks for files in the same excluded directory.
682 int path_excluded(struct path_exclude_check *check,
683 const char *name, int namelen, int *dtype)
686 struct strbuf *path = &check->path;
689 * we allow the caller to pass namelen as an optimization; it
690 * must match the length of the name, as we eventually call
691 * excluded() on the whole name string.
694 namelen = strlen(name);
697 path->len <= namelen &&
698 !memcmp(name, path->buf, path->len) &&
699 (!name[path->len] || name[path->len] == '/'))
702 strbuf_setlen(path, 0);
703 for (i = 0; name[i]; i++) {
708 if (excluded(check->dir, path->buf, &dt))
711 strbuf_addch(path, ch);
714 /* An entry in the index; cannot be a directory with subentries */
715 strbuf_setlen(path, 0);
717 return excluded(check->dir, name, dtype);
720 static struct dir_entry *dir_entry_new(const char *pathname, int len)
722 struct dir_entry *ent;
724 ent = xmalloc(sizeof(*ent) + len + 1);
726 memcpy(ent->name, pathname, len);
731 static struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len)
733 if (cache_name_exists(pathname, len, ignore_case))
736 ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
737 return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
740 struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len)
742 if (!cache_name_is_other(pathname, len))
745 ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
746 return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
750 index_nonexistent = 0,
756 * Do not use the alphabetically stored index to look up
757 * the directory name; instead, use the case insensitive
760 static enum exist_status directory_exists_in_index_icase(const char *dirname, int len)
762 struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
763 unsigned char endchar;
766 return index_nonexistent;
767 endchar = ce->name[len];
770 * The cache_entry structure returned will contain this dirname
771 * and possibly additional path components.
774 return index_directory;
777 * If there are no additional path components, then this cache_entry
778 * represents a submodule. Submodules, despite being directories,
779 * are stored in the cache without a closing slash.
781 if (!endchar && S_ISGITLINK(ce->ce_mode))
784 /* This should never be hit, but it exists just in case. */
785 return index_nonexistent;
789 * The index sorts alphabetically by entry name, which
790 * means that a gitlink sorts as '\0' at the end, while
791 * a directory (which is defined not as an entry, but as
792 * the files it contains) will sort with the '/' at the
795 static enum exist_status directory_exists_in_index(const char *dirname, int len)
800 return directory_exists_in_index_icase(dirname, len);
802 pos = cache_name_pos(dirname, len);
805 while (pos < active_nr) {
806 struct cache_entry *ce = active_cache[pos++];
807 unsigned char endchar;
809 if (strncmp(ce->name, dirname, len))
811 endchar = ce->name[len];
815 return index_directory;
816 if (!endchar && S_ISGITLINK(ce->ce_mode))
819 return index_nonexistent;
823 * When we find a directory when traversing the filesystem, we
824 * have three distinct cases:
827 * - see it as a directory
830 * and which one we choose depends on a combination of existing
831 * git index contents and the flags passed into the directory
834 * Case 1: If we *already* have entries in the index under that
835 * directory name, we always recurse into the directory to see
838 * Case 2: If we *already* have that directory name as a gitlink,
839 * we always continue to see it as a gitlink, regardless of whether
840 * there is an actual git directory there or not (it might not
841 * be checked out as a subproject!)
843 * Case 3: if we didn't have it in the index previously, we
844 * have a few sub-cases:
846 * (a) if "show_other_directories" is true, we show it as
847 * just a directory, unless "hide_empty_directories" is
848 * also true and the directory is empty, in which case
849 * we just ignore it entirely.
850 * (b) if it looks like a git directory, and we don't have
851 * 'no_gitlinks' set we treat it as a gitlink, and show it
853 * (c) otherwise, we recurse into it.
855 enum directory_treatment {
858 recurse_into_directory
861 static enum directory_treatment treat_directory(struct dir_struct *dir,
862 const char *dirname, int len,
863 const struct path_simplify *simplify)
865 /* The "len-1" is to strip the final '/' */
866 switch (directory_exists_in_index(dirname, len-1)) {
867 case index_directory:
868 return recurse_into_directory;
871 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
872 return ignore_directory;
873 return show_directory;
875 case index_nonexistent:
876 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
878 if (!(dir->flags & DIR_NO_GITLINKS)) {
879 unsigned char sha1[20];
880 if (resolve_gitlink_ref(dirname, "HEAD", sha1) == 0)
881 return show_directory;
883 return recurse_into_directory;
886 /* This is the "show_other_directories" case */
887 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
888 return show_directory;
889 if (!read_directory_recursive(dir, dirname, len, 1, simplify))
890 return ignore_directory;
891 return show_directory;
895 * This is an inexact early pruning of any recursive directory
896 * reading - if the path cannot possibly be in the pathspec,
897 * return true, and we'll skip it early.
899 static int simplify_away(const char *path, int pathlen, const struct path_simplify *simplify)
903 const char *match = simplify->path;
904 int len = simplify->len;
910 if (!memcmp(path, match, len))
920 * This function tells us whether an excluded path matches a
921 * list of "interesting" pathspecs. That is, whether a path matched
922 * by any of the pathspecs could possibly be ignored by excluding
923 * the specified path. This can happen if:
925 * 1. the path is mentioned explicitly in the pathspec
927 * 2. the path is a directory prefix of some element in the
930 static int exclude_matches_pathspec(const char *path, int len,
931 const struct path_simplify *simplify)
934 for (; simplify->path; simplify++) {
935 if (len == simplify->len
936 && !memcmp(path, simplify->path, len))
938 if (len < simplify->len
939 && simplify->path[len] == '/'
940 && !memcmp(path, simplify->path, len))
947 static int get_index_dtype(const char *path, int len)
950 struct cache_entry *ce;
952 ce = cache_name_exists(path, len, 0);
954 if (!ce_uptodate(ce))
956 if (S_ISGITLINK(ce->ce_mode))
959 * Nobody actually cares about the
960 * difference between DT_LNK and DT_REG
965 /* Try to look it up as a directory */
966 pos = cache_name_pos(path, len);
970 while (pos < active_nr) {
971 ce = active_cache[pos++];
972 if (strncmp(ce->name, path, len))
974 if (ce->name[len] > '/')
976 if (ce->name[len] < '/')
978 if (!ce_uptodate(ce))
979 break; /* continue? */
985 static int get_dtype(struct dirent *de, const char *path, int len)
987 int dtype = de ? DTYPE(de) : DT_UNKNOWN;
990 if (dtype != DT_UNKNOWN)
992 dtype = get_index_dtype(path, len);
993 if (dtype != DT_UNKNOWN)
995 if (lstat(path, &st))
997 if (S_ISREG(st.st_mode))
999 if (S_ISDIR(st.st_mode))
1001 if (S_ISLNK(st.st_mode))
1006 enum path_treatment {
1012 static enum path_treatment treat_one_path(struct dir_struct *dir,
1013 struct strbuf *path,
1014 const struct path_simplify *simplify,
1015 int dtype, struct dirent *de)
1017 int exclude = excluded(dir, path->buf, &dtype);
1018 if (exclude && (dir->flags & DIR_COLLECT_IGNORED)
1019 && exclude_matches_pathspec(path->buf, path->len, simplify))
1020 dir_add_ignored(dir, path->buf, path->len);
1023 * Excluded? If we don't explicitly want to show
1024 * ignored files, ignore it
1026 if (exclude && !(dir->flags & DIR_SHOW_IGNORED))
1027 return path_ignored;
1029 if (dtype == DT_UNKNOWN)
1030 dtype = get_dtype(de, path->buf, path->len);
1033 * Do we want to see just the ignored files?
1034 * We still need to recurse into directories,
1035 * even if we don't ignore them, since the
1036 * directory may contain files that we do..
1038 if (!exclude && (dir->flags & DIR_SHOW_IGNORED)) {
1039 if (dtype != DT_DIR)
1040 return path_ignored;
1045 return path_ignored;
1047 strbuf_addch(path, '/');
1048 switch (treat_directory(dir, path->buf, path->len, simplify)) {
1049 case show_directory:
1050 if (exclude != !!(dir->flags
1051 & DIR_SHOW_IGNORED))
1052 return path_ignored;
1054 case recurse_into_directory:
1055 return path_recurse;
1056 case ignore_directory:
1057 return path_ignored;
1064 return path_handled;
1067 static enum path_treatment treat_path(struct dir_struct *dir,
1069 struct strbuf *path,
1071 const struct path_simplify *simplify)
1075 if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git"))
1076 return path_ignored;
1077 strbuf_setlen(path, baselen);
1078 strbuf_addstr(path, de->d_name);
1079 if (simplify_away(path->buf, path->len, simplify))
1080 return path_ignored;
1083 return treat_one_path(dir, path, simplify, dtype, de);
1087 * Read a directory tree. We currently ignore anything but
1088 * directories, regular files and symlinks. That's because git
1089 * doesn't handle them at all yet. Maybe that will change some
1092 * Also, we ignore the name ".git" (even if it is not a directory).
1093 * That likely will not change.
1095 static int read_directory_recursive(struct dir_struct *dir,
1096 const char *base, int baselen,
1098 const struct path_simplify *simplify)
1103 struct strbuf path = STRBUF_INIT;
1105 strbuf_add(&path, base, baselen);
1107 fdir = opendir(path.len ? path.buf : ".");
1111 while ((de = readdir(fdir)) != NULL) {
1112 switch (treat_path(dir, de, &path, baselen, simplify)) {
1114 contents += read_directory_recursive(dir, path.buf,
1126 dir_add_name(dir, path.buf, path.len);
1130 strbuf_release(&path);
1135 static int cmp_name(const void *p1, const void *p2)
1137 const struct dir_entry *e1 = *(const struct dir_entry **)p1;
1138 const struct dir_entry *e2 = *(const struct dir_entry **)p2;
1140 return cache_name_compare(e1->name, e1->len,
1144 static struct path_simplify *create_simplify(const char **pathspec)
1147 struct path_simplify *simplify = NULL;
1152 for (nr = 0 ; ; nr++) {
1155 alloc = alloc_nr(alloc);
1156 simplify = xrealloc(simplify, alloc * sizeof(*simplify));
1158 match = *pathspec++;
1161 simplify[nr].path = match;
1162 simplify[nr].len = simple_length(match);
1164 simplify[nr].path = NULL;
1165 simplify[nr].len = 0;
1169 static void free_simplify(struct path_simplify *simplify)
1174 static int treat_leading_path(struct dir_struct *dir,
1175 const char *path, int len,
1176 const struct path_simplify *simplify)
1178 struct strbuf sb = STRBUF_INIT;
1179 int baselen, rc = 0;
1182 while (len && path[len - 1] == '/')
1188 cp = path + baselen + !!baselen;
1189 cp = memchr(cp, '/', path + len - cp);
1193 baselen = cp - path;
1194 strbuf_setlen(&sb, 0);
1195 strbuf_add(&sb, path, baselen);
1196 if (!is_directory(sb.buf))
1198 if (simplify_away(sb.buf, sb.len, simplify))
1200 if (treat_one_path(dir, &sb, simplify,
1201 DT_DIR, NULL) == path_ignored)
1202 break; /* do not recurse into it */
1203 if (len <= baselen) {
1205 break; /* finished checking */
1208 strbuf_release(&sb);
1212 int read_directory(struct dir_struct *dir, const char *path, int len, const char **pathspec)
1214 struct path_simplify *simplify;
1216 if (has_symlink_leading_path(path, len))
1219 simplify = create_simplify(pathspec);
1220 if (!len || treat_leading_path(dir, path, len, simplify))
1221 read_directory_recursive(dir, path, len, 0, simplify);
1222 free_simplify(simplify);
1223 qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
1224 qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
1228 int file_exists(const char *f)
1231 return lstat(f, &sb) == 0;
1235 * Given two normalized paths (a trailing slash is ok), if subdir is
1236 * outside dir, return -1. Otherwise return the offset in subdir that
1237 * can be used as relative path to dir.
1239 int dir_inside_of(const char *subdir, const char *dir)
1243 assert(dir && subdir && *dir && *subdir);
1245 while (*dir && *subdir && *dir == *subdir) {
1251 /* hel[p]/me vs hel[l]/yeah */
1252 if (*dir && *subdir)
1256 return !*dir ? offset : -1; /* same dir */
1258 /* foo/[b]ar vs foo/[] */
1259 if (is_dir_sep(dir[-1]))
1260 return is_dir_sep(subdir[-1]) ? offset : -1;
1262 /* foo[/]bar vs foo[] */
1263 return is_dir_sep(*subdir) ? offset + 1 : -1;
1266 int is_inside_dir(const char *dir)
1271 if (!getcwd(cwd, sizeof(cwd)))
1272 die_errno("can't find the current directory");
1273 return dir_inside_of(cwd, dir) >= 0;
1276 int is_empty_dir(const char *path)
1278 DIR *dir = opendir(path);
1285 while ((e = readdir(dir)) != NULL)
1286 if (!is_dot_or_dotdot(e->d_name)) {
1295 static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
1299 int ret = 0, original_len = path->len, len, kept_down = 0;
1300 int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
1301 int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
1302 unsigned char submodule_head[20];
1304 if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
1305 !resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
1306 /* Do not descend and nuke a nested git work tree. */
1312 flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
1313 dir = opendir(path->buf);
1315 /* an empty dir could be removed even if it is unreadble */
1317 return rmdir(path->buf);
1321 if (path->buf[original_len - 1] != '/')
1322 strbuf_addch(path, '/');
1325 while ((e = readdir(dir)) != NULL) {
1327 if (is_dot_or_dotdot(e->d_name))
1330 strbuf_setlen(path, len);
1331 strbuf_addstr(path, e->d_name);
1332 if (lstat(path->buf, &st))
1334 else if (S_ISDIR(st.st_mode)) {
1335 if (!remove_dir_recurse(path, flag, &kept_down))
1336 continue; /* happy */
1337 } else if (!only_empty && !unlink(path->buf))
1338 continue; /* happy, too */
1340 /* path too long, stat fails, or non-directory still exists */
1346 strbuf_setlen(path, original_len);
1347 if (!ret && !keep_toplevel && !kept_down)
1348 ret = rmdir(path->buf);
1351 * report the uplevel that it is not an error that we
1352 * did not rmdir() our directory.
1358 int remove_dir_recursively(struct strbuf *path, int flag)
1360 return remove_dir_recurse(path, flag, NULL);
1363 void setup_standard_excludes(struct dir_struct *dir)
1367 dir->exclude_per_dir = ".gitignore";
1368 path = git_path("info/exclude");
1369 if (!access(path, R_OK))
1370 add_excludes_from_file(dir, path);
1371 if (excludes_file && !access(excludes_file, R_OK))
1372 add_excludes_from_file(dir, excludes_file);
1375 int remove_path(const char *name)
1379 if (unlink(name) && errno != ENOENT)
1382 slash = strrchr(name, '/');
1384 char *dirs = xstrdup(name);
1385 slash = dirs + (slash - name);
1388 } while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/')));
1394 static int pathspec_item_cmp(const void *a_, const void *b_)
1396 struct pathspec_item *a, *b;
1398 a = (struct pathspec_item *)a_;
1399 b = (struct pathspec_item *)b_;
1400 return strcmp(a->match, b->match);
1403 int init_pathspec(struct pathspec *pathspec, const char **paths)
1405 const char **p = paths;
1408 memset(pathspec, 0, sizeof(*pathspec));
1413 pathspec->raw = paths;
1414 pathspec->nr = p - paths;
1418 pathspec->items = xmalloc(sizeof(struct pathspec_item)*pathspec->nr);
1419 for (i = 0; i < pathspec->nr; i++) {
1420 struct pathspec_item *item = pathspec->items+i;
1421 const char *path = paths[i];
1424 item->len = strlen(path);
1425 item->use_wildcard = !no_wildcard(path);
1426 if (item->use_wildcard)
1427 pathspec->has_wildcard = 1;
1430 qsort(pathspec->items, pathspec->nr,
1431 sizeof(struct pathspec_item), pathspec_item_cmp);
1436 void free_pathspec(struct pathspec *pathspec)
1438 free(pathspec->items);
1439 pathspec->items = NULL;